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[Impeller] make sampler use string_view instead of std::string. (flutter/engine#56821)

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I believe these are always const strings anyway, so remove the copy associated with using std::string.
This commit is contained in:
Jonah Williams 2024-11-26 18:26:20 -08:00 committed by GitHub
parent 354d431d9d
commit 90320619b8
5 changed files with 9 additions and 8 deletions
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6
engine/src/flutter/impeller/core/sampler_descriptor.cc
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@ -4,19 +4,17 @@
#include "impeller/core/sampler_descriptor.h"
#include "fml/logging.h"
namespace impeller {
SamplerDescriptor::SamplerDescriptor() = default;
SamplerDescriptor::SamplerDescriptor(std::string label,
SamplerDescriptor::SamplerDescriptor(std::string_view label,
MinMagFilter min_filter,
MinMagFilter mag_filter,
MipFilter mip_filter)
: min_filter(min_filter),
mag_filter(mag_filter),
mip_filter(mip_filter),
label(std::move(label)) {}
label(label) {}
} // namespace impeller

4
engine/src/flutter/impeller/core/sampler_descriptor.h
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@ -21,11 +21,11 @@ struct SamplerDescriptor final : public Comparable<SamplerDescriptor> {
SamplerAddressMode height_address_mode = SamplerAddressMode::kClampToEdge;
SamplerAddressMode depth_address_mode = SamplerAddressMode::kClampToEdge;
std::string label = "NN Clamp Sampler";
std::string_view label = "NN Clamp Sampler";
SamplerDescriptor();
SamplerDescriptor(std::string label,
SamplerDescriptor(std::string_view label,
MinMagFilter min_filter,
MinMagFilter mag_filter,
MipFilter mip_filter);

1
engine/src/flutter/impeller/display_list/canvas.cc
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@ -782,6 +782,7 @@ void Canvas::DrawVertices(const std::shared_ptr<VerticesGeometry>& vertices,
contents->SetEffectTransform(effect_transform);
contents->SetTexture(texture);
contents->SetTileMode(x_tile_mode, y_tile_mode);
contents->SetSamplerDescriptor(sampler_descriptor);
entity.SetContents(paint.WithFilters(std::move(contents)));
AddRenderEntityToCurrentPass(entity);

4
engine/src/flutter/impeller/renderer/backend/metal/sampler_library_mtl.mm
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@ -34,9 +34,11 @@ const std::unique_ptr<const Sampler>& SamplerLibraryMTL::GetSampler(
if (@available(iOS 14.0, macos 10.12, *)) {
desc.borderColor = MTLSamplerBorderColorTransparentBlack;
}
#ifdef IMPELLER_DEBUG
if (!descriptor.label.empty()) {
desc.label = @(descriptor.label.c_str());
desc.label = @(descriptor.label.data());
}
#endif // IMPELLER_DEBUG
auto mtl_sampler = [device_ newSamplerStateWithDescriptor:desc];
if (!mtl_sampler) {

2
engine/src/flutter/impeller/renderer/backend/vulkan/sampler_vk.cc
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@ -92,7 +92,7 @@ static vk::UniqueSampler CreateSampler(
}
if (!desc.label.empty()) {
ContextVK::SetDebugName(device, sampler.value.get(), desc.label.c_str());
ContextVK::SetDebugName(device, sampler.value.get(), desc.label.data());
}
return std::move(sampler.value);